I believe there was even some classes on how people might possibly entertain themselves in the future since computers would be doing everyone's work for them.
Have we really seen this? I think not. What happened was the computers just enabled people to do their jobs faster and those whose jobs were genuinely removed by technology have simply found work elsewhere.
Perhaps we are at a point where efficiency (read computers) are seriously putting people out of work. But the reality is labour forces are actually flexible and over time they adapt. New jobs will and are being created and as long as our labour forces remain educated enough and can harness technology to their advantage there will no problems.
It's those who are incapable or unwilling to adapt to the new world we live in that will fall by the wayside.